Abstract: A calculation unit acquires first to third prices that are sales unit prices of a first product, a second product, and power generated by a power generation device. Based on at least one of the first to third prices, the calculation unit determines a first supply amount of the first product to a sales means, a second supply amount of the first product to a second manufacturing device, and a third supply amount of the first product to the power generation device. A control signal output unit outputs a control signal such that the first product is supplied to the sales means at the determined first supply amount, the first product is supplied to the second manufacturing device at the determined second supply amount, and the first product is supplied to the power generation device at the determined third supply amount.

Abstract: A calculation unit acquires first to third prices that are sales unit prices of a first product, a second product, and power generated by a power generation device. Based on at least one of the first to third prices, the calculation unit determines a first supply amount of the first product to a sales means, a second supply amount of the first product to a second manufacturing device, and a third supply amount of the first product to the power generation device. A control signal output unit outputs a control signal such that the first product is supplied to the sales means at the determined first supply amount, the first product is supplied to the second manufacturing device at the determined second supply amount, and the first product is supplied to the power generation device at the determined third supply amount.

Abstract: An ammonia manufacturing apparatus includes: an ammonia synthesis unit synthesizing ammonia under a chemical reaction using hydrogen and nitrogen as a raw material gas in a reactor; and a heat storage unit including a heating medium. The heat storage unit can supply heat from the heating medium to the ammonia synthesis unit when an amount of the raw material gas supplied to the ammonia synthesis unit increases.

Abstract: The plant control method includes the following. Calculating a first reference amount to be supplied for an amount of hydrogen to be supplied to a second production device (40). Making a decision on whether or not the amount of remaining hydrogen in a storage device (20) at the beginning of a subject term falls within a reference range.

Abstract: Included are: a raw material component storage unit that stores the raw material component supplied to the ammonia synthesis unit; a high-pressure raw material component storage unit that stores the raw material component at a pressure higher than a pressure at which the raw material component is stored in the raw material component storage unit; and a surplus electric power processing unit including a high-pressure raw material component transfer unit that boosts and transfers the raw material component from the raw material component storage unit to the high-pressure raw material component storage unit, and an expander that converts pressure energy of the raw material component supplied from the high-pressure raw material component storage unit into motive power to generate power.

Abstract: The plant control method includes the following. Calculating a first reference amount to be supplied for an amount of hydrogen to be supplied to a second production device (40). Making a decision on whether or not the amount of remaining hydrogen in a storage device (20) at the beginning of a subject term falls within a reference range.

Abstract: Included are: a raw material component storage unit that stores the raw material component supplied to the ammonia synthesis unit; a high-pressure raw material component storage unit that stores the raw material component at a pressure higher than a pressure at which the raw material component is stored in the raw material component storage unit; and a surplus electric power processing unit including a high-pressure raw material component transfer unit that boosts and transfers the raw material component from the raw material component storage unit to the high-pressure raw material component storage unit, and an expander that converts pressure energy of the raw material component supplied from the high-pressure raw material component storage unit into motive power to generate power.